Apparatus for filtering and extracting suspended matter from boiler feed-water under pressure.



y w. PB MBBYRTON. APPARATUS FOR FILTERING AND EXTRAGTING SUSPENDED MATTER FROM BOILER FEED WATER UNDER PRESSURE.

APPLICATION FILED JUNI: 15, 1911.

vvPatented Dec. 12, 19111.

To all whom 'it 'may concern: I

UNITED sTATEs PATENT oEEIoE. .i

, -wAL'rEE rEMBEn'roN, or NEW M'os'roN, NEAR MANCHESTER, ENGLAND.

APPARATUS FOR FILTERING `IElXTRACTINGr SUSPENDED MATTER FROM BOILER rEEn-WATEE UNDER rNEssURE B e it known that'I, WALTER engineer\surveyor, holding first-class board of trade certificate, seagoing, being a citizenk of the city of Manchester, England, and residing at 44 `Belgrave road, New Moston,

near Manchester, Lancashire, Great Brit` ain, have invented certain new anduseful Improvements in Apparatus for Filtering end Extracting Suspended Matterl from Boiler Feed-'Viater Under Pressure, of

`which the following is a specificatiomsuch as willl enable those skilled in the art tol which it appertains tovmake' and use 'the same. l y I l This invention relates to apparatus -for filtering and extracting suspended matter from boiler feed water, and the object thereof is to provideanI improved device of this class which will effectually perform the above named operation;a further object being to provide means whereby the fiow of Water into the boiler'through .said device may be regulated as desired; and with these and other objects inview, the invention consists in a device of the class specified, 4con. as. hereinafter described .and

The invention is fully ldisclosed 'in the following specification, of which the accompanying drawing forms a part, in' which theA separate parts of my improvement are designated by v suitable reference characters 1n each ofthe views, and in which:

Figure 1 is a partial vertical section of my improved flterlng apparatus; Fig. 2 a detail view showing two foraminated cylinders which I employ and showing the relation of the apertures of one cylinder tothose of the other; .3 a detail viewshowing a filtery ing cartridge throu h which the`water is strained or filtered 11n the o apparatus; Fi

n ration ofthe 4 a side view on'anenlarged scale o a detail of the construction shown in Fig. '1, and; Fig. 5 .a'sectional view on an enlarged scale of a part of the f construction shown in Fig. 1.

In Fig. 1 of the accompanying' drawing I l' have shown' at a the main body..portion of my improved filter, said bodyjportionl being preferablycylindrical in form and thebot-4 ,tom Ithereof being in the shape of Aanm- PEMBERTON,

port-ion a and suspended from the top thereof is a metallic cylinder e having a plurality therein, said apertures being-approximately elliptical in form and those apertures at the lower end of said cylinder being made larger in size than those at the upper end thereof,

by means of av cap or other device e2. v

The filtering medium which I employ is .preferably composed of three layers dl of lfibrous'. material or fabric, such as cocoanut fiber, said ltering medium being made in vthe form ofacartrid'ge andadapted to inclose said cylinder, the three layers thereof being held apar by means of spiralwindings cl2 of ropijng interposed between said cartridge layers, as will be clearly seen in Fi 3 of the drawing. y

outer cylinder e is an inner cylindere* perforated. in the -samevmanner asthe outer cylinder, except that the apertures are-all made the same size..

tegraltherewith is an expanded spider head ge* connected with which isa spindlefwhlch formed in' 'connection with the top of the dome or head a* of the `4 filter body a, 'and as ended by meansl of an annular head e tween the'body a of the filter and the dome nl* thereof' and on which the 'head-eI of the cylinder es rests. Mounted on and adjustable lon itudinally of said spindle f is a nrt lower portion of which is formed into a col'- lar portion i and the upper end of which is `of apertures arranged circumferentially..

and vsaid cylinder being closed at the bottom ounted in and fitting snuglyA within the e provided with a. nut is, said bushing being specification of Letters Patent. Patented D ec. 12, 1911. i Application med June i5, 1911. -s'erial N. 633,338.

`inlet valve c, and'the head a* with a discharge valve c. Mounted in the main bodyl At the top of the said inner cylinder el and-preferably made in entends upwardly through a stuffing vbox g shown in the drawingthe cylinder e.is sus- .ormed integrally therewith and secured bel1 and a ove said nut h is Ia bushing i the.A

supported'in across head j which in turn is supported on two uprights or pillars j and the spindle f is also providedfabove the nut h with a han'dle, wheel k. A

At one side of the main body. portion a of the lter is a pressure gage m and onthe opposite'side is a safety'valve fn which is.V

lspring-operated and may be set to any desired pressure. l

Connected with the bottom of the lower cone-shaped portionv of the Iilterfa is a diswork at charge valve p which communicates 'with 'ajreceiving hopper q, and secured to one 'side of the head a* 'of said ilter is a coupling o ex-A tending -into said headlin" the formpofa downwardly directed jet through which steam may be forcedin order. to clean or j flush .out ythe lter angl remove therefrom any deposits which may accumulate therein,

and ysaid deposits may be 'discharged from:

said filter through the valve p. into the hopper q, and the operation willbe readilyr unto be used.,l Water. is then admitted through' said inlet valve c to the lower art of the body a whence it iiows -throug 4the-three layers of fibrous material, and through the openings in both the outer and inner cylinders after which, it .,iows upwardlyeintothe head a and 'out through theldischarge valve-c and linto the boiler'. 4

In the construction shown the cylinder e* is movable both vertically and circumferentially by means of the spindle f and the mechanism for moving the same. This 4 olperation, 4as will be understood, permits of remain ino rative. By 4moving-the said in-v e regulationofthe-size ofthe openings in the walls of said cylinders, by reason of the fact'"that when the spindle turned, the inner cylinder is correspondingly turned circumferentially and the openings in said inner cylinder 'are thus turned away from those in the outerfcylinderuntil -said openings' are of the desired size or closed entirely, and in the latterevent the ilter will ner cylin er vertically, the size of said openings may beregulated or their entire closure eected in the same manner.

As hereinbefore stated the openings in the lower part of the outer cylinder are made slightly larger than those 1n the upper portion thereof and are so disposed on saidcylinder `that when the inner cylinder is "tangular portion of the bushin l dle-is moved together with the ushing u'pil manipulated, all the apertures or openingswill open simultaneously, but those in the said lower part will be of larger area; thus a it `will beseen that water will be admitted through'the lower part `ofsaid cylinder more.

vrapidly than through the upper partthereof. This .is to allow vforY the more ra id clogging or'filling up which invariably ta 'es' .place when the apparatus is not in use, and asv the precipitation of foreign matter is more lia y tures in the lower part of the filter first," it

le to affect the-closure of the apervwill 'be readily seen that this construction tends to e ualizethe inflow of water tdhroughout t e-entire length` of thecylin'- ers. l f

The bushing z' is provided wwith a central longitudinal bore or'passage, the lower portionof which is circular,.and the up er portion rectangular in cross section; tiaty portion ofthe spindle j within the lower part4 of'said' bushin 'belng threaded, and that."

portion 'thereo `threaded portion and extending to the top of the bushing being o'fjthesame sha e as said upper part of saidbushing and tting tightly therein. That portion of the s indle fextending from the top of said'bus ing z' immediatelyV above said is slightly turned downand'provided with a thread on which the hand .wheel k is movable, andthe extremen per portion of said spindle'l above the han wheel lc is turned down still more and is provided with indi- .cator ymarks k2 by means of which the vertical adjustment of the openings inthe cylinders e and e may be easily and accurately adjusted. The collar ortion i of the bushing i and one side o the cross'head j are v also provided with similar indicating marks j, and by means of which the lateral adjust ment. of said openings may be determined in va similar manner, when it is desired to regulate the said openings by a circumferential movement of said spindle. As hereinbefore stated when it is desired to adjust said openings circumferentially, the nut his loosened as is also the nut i2 andthe bushing i is turried by means of a wrench applied to the collar portion i thereof, and therectangular formof that part of" the spindle f extending through the upper recz, said spinthe desired nuts h and opening -has been made.- i are then screwed tightly into position and this operation will secure the vspindle f against circumferential movement. When it is desired'to adjust the o enings vertically, the nut h is loosened and t e hand wheel 7c tightened, this operationtending'. to

raise said spindle, orthis operation may be reversed and the nut h tightened and the handl wheel lc loosened, in'which event the v spindle f is moved downwardly, and as hereinbefore stated in either of these operations y reason of v the safety valvem, will operate and the ylter valve p same out through the valve may be cut out of operation by means of an ordinary by-pass valve until it has been cleaned. This operation of cleaning mayL be accomplished by .opening the cleaning 'o-in the head a* ofthe fi ter, downwardly into the interior of the inner cylinder e",

and by reason of the said pressure the steam will be forced through the openings in both of saidcylinders, through the three layers of fibrous material and effectively removing therefrom all deposits and discharging the into the receiv' ing hopper g, or a chernica reagent may be Letters Patent, is

employed in place of the steam and the above result obtained in practically the same manner. i

When starting the ap aratus it is desirable that the pressure o water in thefilter and shown on the gage m shall be slightly in excess of the pressure of the boiler as this will insure that the apparatus is in proper working condition, and any lincrease in pressure shown on the gage m will denote the clogging or ,obstruct-ion of the openin s of the cyllnders e and e3 or the mesh o the fibrous layers d of the filtering cartridge.v

It will be understood, however, that changes in the construction hereinbefore de-l scribed and modifications therein may be made, within "the scope of the appended claims, without departingl from the spi-rit of miinvention or sacrificlntg its advantages. avin fully describe .my invention, what I c aim as new and desire to secure by 1. A vfilter of the class described comprising a body portion or casing provided at the bottom portion thereof with an 'inlet and at the top4 ortion-thereof with an outlet, a perforate tubular c linder suspended in the top portionbelow t e outlet, another perforated tubular cylinder lsupported 'in the rst-named cylinder, a plurallty of porous, fibrous casinfgs and means or rotatirzI and moving it longitu inally. i

2. .A filter of the class described comprisf ing a body portion or casing provided at the bottom portionthereof with an inlet and at the top portion thereof with 'an outlet, a

inclosing the outer cylinder,

perforated tubular cylinder suspended in the `top portion below the. outlet, another perforated tribular cylinder supported in the first-named cylinder, a plurality of porous, fibrous casings inclosing the outer cylinder,

should become clogged`- by at the bottom of the body portion a' of the filter and introducing a jet of steam under'high pressure, throu h the connection of the body the inner cylinderplurality o and means for-rotatin the inner cylinder and moving it longitu inally, the Iperforations in the outer cylinder decreasing in size from the bottom thereof upwardly.

3. In a filter of the class descr1bed,a sta' vtionary erforated tube, a movablep'erforated tu e placed therein, a plurality of fibrous, fabric casings inclos' the `stationar tube, and means for rotating the movab e tube and moving it longitudinally.

4. In a filter of the class described. a .sta-

tionary rated' tu laced therein, 'a plurality of fibrous, fabric casings inclosing the stationar tube, and means for rotatln the movab e tube and 4moving it longitu inally, the

erforations in the stationary tube decreaslngin dimensions from the-bottom thereof upwardly.

5. In a filter of the class described, a body with the top part thereof, a stationary perforated tube suspended in the top perforated tube placed in the stationary tube, a rod rigidly connected with the movable tube and passing out through the top of the to portion, and means for manipulating said rod to rotate the movable .tube and move it longitudinally.

6. In a filter of the class lindrical body described, a cyrtion provided at the bottom thereof wlth adischarge valve below which is a discharge hopper, an inlet con. nected with the bottom portion, an .outlet connected with the vtop part of the body portion, a stationary per-y part of the body forated tube suspended in the top part of the body portion below the outlet, a movableperforated tubefplaced in the stationary tube, a plurality of fibrous, fabric casings inclosing thestationary tube, and means for rotating the movable tube vand moving it longitudinally. p

.7. In a .filter of the class described, a cylindrical. body portion provided at the bottom thereof wlth a discharge valve below which is a discharge hopper, an vinlet conf nected with the bottom part of the'body portion, an outlet connected withthe-top part rtion a stationary erforated tube suspen ed inthe top part o the body erforated tube, a'movable perfoy part of. `said body portion below the out-let, a movable Aportion having an inlet connected with the bottom part thereof'and an outlet connectedl portion below the outlet, a movable perforated tube laced in the stationary tube, a f) fibrous, fabric casings incloslng the stationa tube, and means for ro-` t-atin the movab e tube and moving litlon gitu mally the top part of the body por-- tionbeing, also provided with an inlet nozzle.

8. I-n a filter of suspended therein, a movable perforated tube placed in the stationary tube, a rod .the dass deseribea body portion, a stationary perforated tube rigidly connected with the movable tube' In testimony that I claim the foregoing and passing out through the .top of thel as my invention I have signed my name in 10 body ortion and by which the movable tube presence of the subscribing witnesses this may Ee rotated and moved longitudinally, 25th day of May, 1911.

.and means connected with thetop of the WALTER PEMBERTON.

body portion` and with said rod whereby the Witnesses extent of the movement iof said tube in l ERNALD SIMPSON MosELEY, either direction may be regulated. MALooLM SMETHURST. 

